Games are like a piece of art in a way, they encompass multiple areas of artistry, music, story telling, design, etc. They all have good things to do, and bad things that are aesthetically displeasing and can mellow out the gameplay and overall performance of the game. Rounding it all together, keeping a cool head for all of these variables, and still making it flexible and workable will make a good game. Oft times a good example of this is just something simple. Simply because it's easier to make a good simple game then it is to make a good complex game. Go fig.